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Broadcasting device having power frequency carrier

Broadcasting device having power frequency carrier description/claims

The present invention relates to a broadcasting device; more particularly, relates to inputting a voice signal to an input device to be transmitted to an output device a long an indoor electrical power by using an amplifying device coordinated with a first and a second power frequency carrier device.

A general amplifying device 6 (as shown in FIG. 5) comprises an amplifier 61; a microphone unit 62 connected with the amplifier 61 for receiving a voice signal; and at least a speaker unit 63 connected with the amplifier 61 to sound the voice signal received by the microphone unit 62. The amplifier 61 connects to each speaker unit 63 respectively with a signal transmission line 7; and the amplifier 61 comprises a power line 64 to obtain an outside power source. By the above structure, the voice signal is transmitted along the signal transmission line 7 by using the amplifying device 6. The speaker unit 63 is shut by removing or blocking the signal transmission line 7 between the amplifier 61 and the speaker unit.

Although the general amplifying device 6 is able to transmit the voice signal, the signal transmission line 7 has to be set between the amplifier 61 and each speaker unit 63. Besides, the amplifier 61 and the microphone unit 62 are usually deposed in a guard room, a community head office or a school broadcasting room, etc., and the speaker units 63 are usually deposed against a wire pole, on a wall or at a corner of a building, etc., so that there is usually a long distance between the amplifier 61 and the speaker unit 63. Hence, the wiring of the signal transmission line 7 is complex. In addition, because the signal transmission line 7 after the wiring is exposed to the external environment, the signal transmission line 7 is apt to be damaged, hardened or broken, etc. Hence, the prior art does not fulfill users' requests on actual use.

The main purpose of the present invention is to input a voice signal to an input device to be transmitted along an indoor electrical power to an output device by using an amplifying device coordinated with a first and a second power frequency carrier device.

To achieve the above purpose, the present invention is a broadcasting device having power frequency carrier, comprising an amplifying device, an input device and an output device, where the amplifying device comprises a first power frequency carrier device and a signal control module; the first power frequency carrier device comprises a junction to connect to an indoor electrical power; the input device is connected with the signal control module; the output device comprises a voice output unit and a second power frequency carrier device; and the second power frequency carrier device comprises a junction to connect to the indoor electrical power. Thus, a novel broadcasting device having power frequency carrier is obtained to transfer a voice signal.

The present invention will be better understood from the following detailed descriptions of the preferred embodiments according to the present invention, taken in conjunction with the accompanying drawings, in which

FIG. 1 is a fundamental structural view according to a preferred embodiment of the present invention;

FIG. 2 is a structural block view according to the preferred embodiment of the present invention;

FIG. 3 is a view showing a first state of use according the preferred embodiment of the present invention;

FIG. 4 is a view showing a second state of use according the preferred embodiment of the present invention; and

FIG. 5 is a structural view showing an amplifying device of a prior art.

The following descriptions of the preferred embodiments are provided to understand the features and the structures of the present invention.

• Provisional Patent
• Utility Patent

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